CHECKPOINT in SQL Server

CHECKPOINT is an internal SQL Server process that runs periodically to write dirty pages (changed pages) and transaction log records from memory to disk. It then marks a point in…

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Identifying cached tables in SQL Server buffer

When a query is submitted it goes through a sequence of phases in SQL Server. Starting from parse, optimization, plan preparation until the execution of the plan. During the execution…

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When did the last statistics update occur?

Statistics are the critical piece of information that SQL Server maintains for a table or index. The query optimization process depends on the statistics information to prepare an execution plan…

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DBCC HELP!!

SQL Server has many DBCC commands, administrators use them for maintenance, validation and to collect information about the database, for example, DBCC SHOW_STATISTICS displays statistics for a table. But there…

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Benefits of including a non-key column in a non-clustered index

SQL Server supports to include non-key column as part of the non-clustered index. Having an index with the included column improves the query performance in several scenarios. This blog covers…

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What does CHECK OPTION do in a View

When CHECK OPTION specified in a view definition, all the data modification and insertion through the view will be forced to qualify the view’s filter criteria. I will use the…

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Execute SSIS Package Using T SQL

SQL Server provides several tools to execute the SSIS package. A package can be executed using dtexec command prompt utility, SQL Agent and Transact SQL. This article provides information and…

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How to find the Service Account of SQL Server Service

Dynamic management views are very much useful when it comes to troubleshooting or collecting server and database related configuration information. The sys.dm_server_services provides the information about the service name and…

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Data file not deleted from filesystem even after DROP DATABASE

When a database is dropped using the DROP DATABASE command, you might have noticed the command completed successfully and of course, the database is dropped but you could still see…

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Identifying unused non clustered index

Having an Index on a table will indeed be good for the performance of queries. At the same time having too many indexes on a table will hurt the query…

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